One-Color Outfits and the Long Line Effect

monochrome outfits to look taller

Short on inches and tired of breaking your outfit in half? Try monochrome outfits to look taller: in one study, viewers guessed taller heights for people dressed in one color.

This page is part of the wider collection of petite style tips on this site.

Item Value
Monochromatic outfits in the 2018 University of Kentucky study Taller height estimates
Other outfit comparisons in that study No effects found
Outfits’ effect on income and attractiveness ratings No overall impact
Photos with more contextual information More accurate height estimates
Stylist advice reported by Glam, April 6, 2025 One color from head to toe removes visual breaks

These findings come from the University of Kentucky dissertation and Glam’s report on clothing colors. Sources get updated and revised, so check the source before you rely on the figures.

What the research says about one-color outfits

A 2018 doctoral dissertation from the University of Kentucky explored how clothing design, specifically the suit, can create height illusions. Participants viewed photographs of people in different suit designs and estimated how tall each person was. You can read the abstract at the university’s repository.

The headline result is that monochromatic outfits yielded taller height estimates. The other outfit comparisons did not show effects. The study tested overall lightness (light versus dark) and monochromaticity (monochromatic versus lightness blocking), so the one-color effect was the one that stood out, as the abstract reports.

The author also notes there is little empirical evidence on how clothing changes height perception. This study used suits in photographs, not petite wardrobes, so treat it as a useful hint rather than a promise. It does back up what many stylists already suggest, and the abstract says non-experts offered similar suggestions to clothing design experts on monochromaticity and lightness.

Why one long line seems to add height

The idea is simple: your eye travels up and down instead of stopping. PureWow’s styling guide says dressing all in one color creates a long line from your head to your toes and makes you look taller automatically. You can see the full list in the PureWow article.

Costume designer and wardrobe stylist Chloée O’Hayon-Crosby, speaking to Glam in a piece dated April 6, 2025, said wearing one color from head to toe removes visual breaks. In her words, this makes you appear taller and more fluid. The details are in the Glam article.

The reverse is a hard contrast at your middle. The same stylist says a white shirt with dark pants creates a horizontal line at the waist, visually shortening your frame, according to Glam.

monochrome outfits to look taller Dark layers
A woman wears a dark outfit and a patterned scarf beside a tree.

How to build a monochrome outfit

You do not need a matching set. Work through these steps with pieces you may already own.

  1. Choose a base color. Pick a shade you enjoy wearing, since PureWow says the long-line effect works for any color.
  2. Vary the shades. The Modest Man describes monochromatic as different shades of the same color, and says these schemes reduce contrast.
  3. Mix textures. LookSmart says slightly different shades of brown or beige can look chic, especially with textures like wool, silk or linen, in its color combinations guide.
  4. Match your shoes. PureWow notes that skin-colored shoes visually extend the length of your legs without a break in color, as described in its outfit list.
  5. Keep accessories in proportion. PureWow warns that a giant tote can make a petite frame look even tinier, so a smaller bag keeps the scale in check.

If you want a pop of color, Glam suggests colorful accessories, which add interest without affecting your perceived height, per the Glam article.

Which colors work best?

Stylists lean toward darker shades. The Glam stylist names black, deep navy, charcoal and rich earth tones as shades that elongate the body with a streamlined silhouette. She adds that pastels and neons can make the body appear wider rather than elongated, per Glam.

PureWow agrees that an all-black ensemble has the extra perk of being simultaneously slimming and lengthening, in its fashion guide. Still, the Kentucky study did not find effects from the other outfit comparisons it tested, as its abstract explains. So read the dark-color advice as styling opinion, not settled fact.

A practical way to choose is to pick a color that suits your complexion. LookSmart advises choosing the best colors for your complexion in its styling hub. A shade you feel good in will beat a “taller” shade that you avoid wearing.

Where the effect has limits

Clothes are only one cue. The Kentucky study found that height estimates were more accurate with more contextual information, and that perceived height potentially depended on factors such as stance and the presence of nearby people, as the abstract states. In real life, the people around you and how you stand matter too.

Outfits overall did not change ratings such as income and attractiveness in that study, although estimated height did correlate with these social attributes, per the dissertation record. In other words, a one-color outfit is a styling tool, not a verdict on you.

Fit still comes first. The Modest Man says the best color combination in the world will not make ill-fitting clothes look good, in its color guide. If you like a looser shape, the guide on how to wear oversized clothes petite shows how to balance volume with length.

Small details that extend the line

Once your color is set, a few shape choices can reinforce the effect. For more ideas beyond color, see this guide on how to look taller in clothes.

  • High-waist bottoms: PureWow calls high-waist pants and skirts one of the easiest ways to look taller, per its outfit guide.
  • Cropped jackets: raising the hem a bit makes your waist look higher than it is, according to PureWow.
  • Cropped pants: PureWow says cropped trousers create a leg-lengthening effect, as noted in the same list.
  • Vertical lines: Glam’s stylist says vertical stripes, pinstripes and elongated patterns draw the eye up and down, while horizontal stripes and oversized designs draw it out sideways, per Glam.

Frequently asked questions

Do monochrome outfits really make you look taller?

Show answer

In the University of Kentucky study, monochromatic outfits yielded taller height estimates, while the other outfit comparisons did not show effects. The study used suits in photographs, so the real-world boost for you may differ. See the abstract for details.

Does a monochrome outfit have to be black?

Show answer

No. PureWow says the long-line effect works for any color, although all-black has the extra perk of being slimming and lengthening. Read more in the PureWow article.

Can I mix different shades in a one-color look?

Show answer

Yes, as long as the shades stay close together. A sharp jump in lightness between your top and bottom brings back the visual break that a one-color outfit is meant to remove, a point the Glam stylist makes in the Glam article. Step back from a mirror and check that your eye can travel from head to toe without stopping.

Will dressing in one color change how people rate me?

Show answer

Probably not much. In the Kentucky study, outfits overall did not impact ratings such as income and attractiveness. The main thing a one-color outfit changed was how tall viewers guessed people were, not how they judged them. The dissertation abstract has the full wording.